5ft tropical tank

Thinking of closing down my 5ft tropical tank and changing it to cold water for goldfish instead. Purely because it would take a lot of fish to fill this tank and get full advantage out of it! Mixture of all sorts in here from tetras, cory doras, a couple of AD frogs, 2-3 bristle nose, shrimp (wood, bamboo, armano), and some other fish but unsure on their names. I’d guess that there’s at least 30 fish plus the plecs, frogs and shrimp. Open to sensible offers. Would prefer for all to go together if possible as will be removed and put in a storage box with lid and air holes for transportation. See less